When I was first expecting [DD is now 21 months old] I wasn't keen on watching anything, but a friend really recommended it. She did me the biggest favour. She is a GP, but did a number of rotations in different departments, including deliveries and nicu so had a vast knowledge and patience. She prewatched, made notes, sat with me and prewarned of bits that might be worrying. She also talked through different ways of handling things. She was excellent and well worth the cake I made her for each OBEM. I did watch them on my own after a while and found the fore knowledge helped me understand that every woman is different and each delivery is different.
I had my NCT classes cancelled as I was the only one signed up locally and though given another option it was too late [8pm-10pm] over an hour drive away. All the NHS ones were on days where I had consultant appointments.
I knew that my pregnancy was high risk [weight] so would deliver at a consultant led unit. Was freaked that they'd just decide on a CS. I had a lovely VB with a lovely midwife and it was exactly what I wanted, but not what I was expecting. My friend had prepared me for all options and I think I'd mentally prepared myself for a long labour.
So I would advise that if you haven't got a friend like mine, find out about doulas, they can offer very similar services. The support they can offer you is in addition to your midwife, the good thing is that you can shop around to find the right person for you.
My DH also watched OBEM on his own with friends notes, it helped him understand what labour is all about and how useful active birth partners can be. He was excellent and really supportive, helped me relax and concentrate, he knew exactly what my wishes were [birth plan etc]. Having him prepared helped me so much.
I am due DC2 in April next year and have been told that I am classed as low risk this time. It has opened up more options for me, last time being high risk meant that the options were slightly more limited, but that was good [for me] in a way, as less to panic/mull over.